Subject:
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Re: GPS Reality?
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 11 Apr 2005 13:14:42 GMT
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Original-From:
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PeterBalch <peterbalch@compuserve.com^Spamless^>
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Viewed:
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916 times
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> three sonar beacons,
> which are broadcast a radio ping, and then transmit each of their • signals.
> The bot controller than uses the time difference between the request • radio
> ping, and the sonar reply to work out its position.
So the robot works out it's best guess from the three intersecting circles.
Of course, the radio signal is not strictly neccessary. Beacon A broadcasts
it's beep. Beacon B hears A, waits a fixed delay then broadcasts it's beep.
Beacon C hears A, waits a longer delay time then broadcasts it's beep. Etc.
The robot hears the beeps (in order A, B, C, ... because the delays are
long enough). It works out it's best guess from the intersecting
hyperbolae.
> JB: I've worked with a number of "solutions" but none of them are
> anything I'd recommend.
What's the best you've see so far?
Peter
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Message has 1 Reply:
 | | Re: GPS Reality?
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| A solution I suggested on the DPRG list was that if radio telemetry is being sent to and from the robot, then to have each robot with a clearly identifiable dot- rather like a police car - on the top. You could then have a camera covering the arena, (...) (19 years ago, 11-Apr-05, to lugnet.robotics)
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